Sanyo MCDZX-570-M Service manual
FILE NO.
Service Manual
CD Portable Radio
Cassette Recorder
MCD-ZX570M (XE)
CONTENTS
Laser beam safety precaution .......................................... 1
IC Block Diagram & Description ....................................... 1,9
Tuner Adjustments ........................................................... 2
Wiring Connection ........................................................... 3
Exploded View (Cabinet & Chassis) ................................ 4
Parts List .......................................................................... 6
Schematic Diagram .......................................................... 10
Wiring Diagram ............................................................... 16
Block Diagram .................................................................. 19
PRODUCT CODE No.
164 136 00
REFERENCE No. SM5810656
LASER BEAM SAFETY PRECAUTION
• Pickup that emits a laser beam is used on this CD section.
CAUTION :
USE OF CONTROLS OR ADJUSTMENTS OR
PERFORMANCE OF PROCEDURES OTHER
THAN THOSE SPECIFIED HEREIN MAY RESULT
IN HAZARDOUS RADIATION EXPOSURE.
LASER OUTPUT................ 0.6 mW Max. (CW)
WAVE LENGTH ................. 790 nm
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
ADVARSEL-USYNLIG LASER STRÅLING VED ÅBNING, NÅR
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION, UNDGÅ
UDS ÆTTELSE FOR STRÅLING.
VARNING-OSYNLIG LASER STRÅLNING NÄR DENNA DEL
ÄR ÖPPNAD OCH SPÄRR ÄR URKOPPLAD. STRÅLEN ÄR
FARLIG.
VORSICHT! -UNSICHTBARE LASERSTRAHLUNG TRITT
AUS, WENN DECKEL GEÖ FFNET UND ENN
SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT IST. NICHT,
DEM STRAHL AUSSETZEN.
VARO !- AVATTAESSA JA SUOJALUKITUS OHITETTAESSA
OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
ÄlÄ KATSO SÄTEESEEN.
IC BLOCK DIAGRAM & DESCRIPTION
IC201 BA3308 (Pre-Amp.) IC301 LA4227 (Power Amp.)
CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
MUTE
ch1 ch2
ALC
1
NF 1 INPUT 1 OUTPUT 1 GND ALC Vcc OUTPUT 2 INPUT 2 NF 2
23456789
IC401 TC4052(Defferential 4-Channel Multiplexer)
V
DD
16
VCC
STANDBY
1
STANDBY
SW
OUT1
SHUT DOWN
PROTECTION
2
OUT2
BS1
THERMAL
BS2 NF2
OUT c IN
NF1
101112
9
IN1
PRE GND
78
-
+
Ch1
BIAS
+
Ch2
-
3
4
CIRCUIT
5
IN2 DC
6
(FILTER)
13 X-COMMON
0X
12
INH
1X
10
OUT c IN
OUT c IN
A
9
B
LOGIC LEVEL CONVERTER
6
OUT c IN
OUT c IN
OUT c IN
OUT c IN
OUT c IN
14
2X
15
3X
11
0Y
1
1Y
5
2Y
2
3Y
4
3
Y-COMMON
87
SS
V
V
EE
- 1 -
TUNER ADJUSTMENTS
Use a plastic screw driver for adjustments.
Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.
Set of unit
Supply voltage
speaker impedance
standard output
Function switch
DC 12.0V
:
8 ohms
:
50 mW
:
RADIO
:
a. Parts Location
a.AM Adjustment
Step
Adjusting
Circuit
IF1
2 Connect AM SG to Connect VTVM to 520 KHz Low end T101 Max.
3 test loop speaker terminals. 1650 KHz High end C3
4 Connect AM SG to Connect VTVM to 600 KHz 600 KHz MW ANT COIL Max.
5 test loop speaker terminals. 1400 KHz 1400 KHz C4
Tuning
coverage
Tracking
Input Output Frequency Tuning dial Oscilloscope
Closed the output Connect sweep
termial by sweep generator to 465 KHz Low T103
generator,it place IC101(18) PIN(A)
to MW ANT
b.FM Adjustment
Step
Adjusting Connection
Circuit
1IF
2 Connect FM SG to Connect VTVM to 87.5 MHz Low end L102 Max.
3 FM.ANT & D101(-) speaker terminals. 108.3 MHz High end C1
4 Connect FM SG to Connect VTVM to 90.0 MHz 90.0 MHz L101 Max.
5 FM.ANT & D101(-) speaker terminals. 106.0 MHz 106.0 MHz C2
Tuning
coverage
Tracking
Input Output Frequency Tuning dial Oscilloscope
Connect sweep
generator to
IC101(24)pin (B)
Band switch:MW
Connections
SG Position of VTVM
Adjustment
Band switch:FM FM Dummy antenna: 75 ohms unbalance
Connect VTVM to
generator to IC101
(18) pin (A)
SG Position of VTVM
10.7 MHz Low T102 T104
Adjustment
- 2 -
WIRING CONNECTION
This is a basic wiring connection.
- 3 -
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